Electric motor



July 10, 1934.

T. A. CUTTING ELECTRIC MOTOR Filed Jan. 22, 1952 11111111711111: 11111111111]! 11 I! ll INVENTDR Thu-M Patented July 10, 1934 UNITED STATESELECTRIC MOTOR Theodore A. Cutting, Campbell, Calif.

Application January 22,

8 Claims.

My invention relates to improvements in electric motors and the objectof my improvement is to provide an efficient, simplified electric motor,capable of high speed and having great endurance. Further objects are toprovide means for regulating the speed of the motor, new magnetic meansfor causing rotation, and specially shaped pieces of sheet metal fromwhich the motor is made.

In the drawing:

Figure I is a side view of the motor with one standard broken away,Figure 11 is an end view, Figure III is the blank which bent on thedotted lines forms the vibrator and the means for holding the magnet,and Figure IV is the blank which folded on the dotted lines forms thebase and standards.

The base 1 and the standards 2 are stamped from one piece of sheet metaland the uprights later bent up at right angles. A second piece of sheetmetal, as shown in Figure III, is bent into a vibrating arm at one endand into a clamp for a magnet at the other end. A wheel 3 is mountedupon a pointed shaft 4 between the standards 2. The vibrating arm 5 istapered and has a vertical portion 6 acted upon by magnet 7 and ahorizontal portion bent at the tip into a contact portion 8 whichstrikes against the shaft 4 and causes it and its wheel 3 to rotate.

Each impulse of the alternating current brought to the magnet 7 throughthe wires 9 pulls the upright portion 6 of the tapered spring 5, withthe result that it vibrates rapidly. As the spring 5 is drawn toward themagnet, the tip 8 is drawn against the shaft 4 causing it to rotate. Asthe pull on the magnet ceases the tip flies back clear of the shaft andis ready for a new pull.

The magnet '7 consists of windings upon a small bolt 10, provided with awasher 11, and a nut 12. The washer fits between the nut 12 and the endof the clamp 13. By means of the nut 12 the distance between the magnet'7 and the spring 5 may be regulated with great delicacy, and thisprovides a means of regulating the strength of pull and consequently thespeed of the motor. Dents r 14 in the standards 2 pivot the shaft 4. Theblanks are welded together.

I claim:

1. An electric motor having in combination a base, standards integraltherewith and rising therefrom, a one-piece magnet clamp and vibratingspring fastened to said base, a shaft mounted between said standards, awheel attached to said shaft, a magnet held by said clamp, an iron corefor said magnet, a nut on the core of said magnet, and a washer betweensaid nut and said clamp.

2. The combination in a motor of a base; standards integral with saidbase and extending vertically therefrom; a metal strip attached to saidbase; wings integral with said strip and extending therefrom to form aclamp, said clamp being 1932, Serial No. 588,200

somewhat elevated above said base; an electromagnet slidably held bysaid clamp; a threaded core for said magnet; a washer upon said core; anut also upon said core whereby said magnet may be drawn within saidclamp; a shaft mounted between said standards; a wheel aflixed to saidshaft; and a tapered spring integral with said metal strip risingvertically from said base, passing near the end of said magnet andcontinuing upward for approximately half its length, then curvingforward in a roughly horizontal direction until almost beneath saidshaft, and finally rising again and, at a point near its tip, bearinglightly upon said shaft.

3. A motor frame consisting of a base, standards integral therewith andrising vertically therefrom, a platform attached to said base, means ofembrasure integral with said platform, and a vibrating member attachedto said base and integral with said platform.

4. In an electric motor, a base; standards rising from said base;indentations in said standards; a rotor pivoted in said indentations; astrip of metal attached at the end to said base, having a horizontalportion elevated above said base, a central portion attached to saidbase, and a vibrating portion for driving said rotor; a magnet upon theelevated portion of said strip; means for securing said magnet upon saidstrip; and means for adjusting the distance between said magnet and thevibrating portion of said metal strip.

5. In an electric motor, an actuating mechanism consisting of anelectromagnet and a spring with a fixed end near said magnet, a curve inthe central portion, and an angle near its free tip.

6. In a motor, a rotor and a reciprocating member in cooperationtherewith, said reciprocating member having a terminal bend withyieldable frictional contact with said rotor as it moves in onedirection and freedom therefrom as it flies back.

7. In a motor, a small shaft, a relatively large rotor upon said shaft,a vibrating spring imparting high speed to said shaft by reciprocatingfrictional contact therewith, and a magnet supplied with pulsatingcurrent actuating said spring.

8. In a motor, an actuating mechanism consisting of an electromagnet anda tapered spring with a fixed end near said magnet, a curve in thecentral portion, and an angle near its free tip.

THEODORE A. CUTTING.

